Roller-die.



No. 696,816. Pat'nted Apr;- l, I902. H. HEBDEN.

ROLLER DIE.

(Applicabionfiled Dec. 14, 1901.)

(No Model.)

2 Sheets-Sheet I.

No. 696,816. Patented Apr. I, l902.'

H. HERDEN.

ROLLER ms.

(Appliqation filed Doc. 14, 1901.;

(No Model.)

2 Sheets-Sheet 2,

In: B

Ill

WITNESSES lhvrrnn Frames Farrier @rrrcn.

HENRY IIERDEN, OF \VELLSBORO, PENNSYLVANIA.

ROLLER' DIE.

SPECIFIEGATZON forming part of Letters Patent- No. 696,816, dated April 1, 1902.

Application filed December 14, 1901. Serial No. 85,942. (No medeL T ctZZ who/7t it may concern.-

Be it known that I, HENRY HERDEN', a citizen of the United States, and a resident of Wellsboro, in the county of Tioga and State of Pennsylvania, have invented a new and Improved Roller-Die, of which the following is a full, clear, and exact description.

The invention relates to punches and dies used for bending or cutting and bending metal into various shapes.

The object of the invention is to provide a new and improved roller-die for shaping metal plates, bars, and the like according to a predetermined design without danger of fracturing the metal plate or causing undue abrasion, drawing, or elongation and to insure the formation of a perfect article, the roller-die being particularly serviceable in forming triangular and other projections on heavy metal plates, and preferably such as shown and described in the Letters Patent of the United States No. 650,7 20, granted to me May 29, 1900.

The invention consists of novel features and parts and combinations of the same, as will be fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying draw: ings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of the improvement as applied for forming an integral projection in the shape of a rectangular triangle on a metal plate. Figs. 2, 3, and 4 are similar views of'the same, illustrating successive steps in the formation of the projection. Fig. 5 is a plan view of the roller-die and plate operated on. Fig. 6 is a plan View and side elevation of the bed or anvil for the work. Fig. 7 is a side elevation of the plate, showing the finished projection. Fig. dis a plan view of a modified form of theimprovement, showing the formation of an integral projection in the shape of an equilateral triangle. Fig. 9 is a like view of another modified form of the improvement, showing the formation of an integral square projection on the metal plate. Fig. 10 is a plan View of another modified form of the improvement, showing the bending of one end of the bar over the bedplate. Fig. 11 is a side elevation of the same. Figs. 12 and 13 are plan views of modified forms of the improvement, showing the use of a plurality of roller-dies operating simultaneously on plates to form a plurality of projections. Fig. 14 is an enlarged end elevation of a roller-die mounted on a reciprocating punch-bar, and Fig. 15 is a like view of a modified form of roller.

The roller-die consists, essentially, of a roller A, journaled on a punch-bar B,nionnted to reciprocate up and down in the usual manner on a punch or other machine of any approved construction, and the said roller is adapted to act on a metal plate 0 to form a projection C thereon, the metal plate resting on a bed-plate or anvil D, formed on one side with an abutment D for the projection O to rest on, as indicated in Figs. 1 to 4. The rollerAis provided at one end with a cutting edge A, so that when the roller A is moved downward into contact with one side of the metal plate 0 the said roller cutting edge A cuts the plate and the peripheral surface of the roller bends the out portion downward to form the projection 0'. It is understood that the roller A moves downward in the direction of the arrow a and while in contact with the plate 0 rotates in the direction of the arrow 1), so that the cutting edge easily cuts the plate 0 from the points 0 to 0 (see Fig. 5) and at the same time bends the cut portion downward to form the triangular projection 0 against the abutment D of the bed-plate D.

In the modified form shown in Figs. 8 and .15 the roller A is in the form of the frustum of a cone and thecutting edge A is at the base end of the cone, and in this case the plate 0 is formed with a projection in the shape of an equilateral triangle and similar to the one shown in my patent above referred to. TWo or more such rollers A may be simultaneously employed on the plate 0 to form a plurality of such projections on the plate. As indicated in Fig. 9, the roller A is cylindrical in shape, but is provided at its ends with peripheral cutting edges A and A, so that when the roller A is moved in contact with the plate (3 a square projection is formed on the said plate. Aplurality of such rollers A may be employed simultaneously IQO on the plate (3, as illustrated in Fig. 13, to form a corresponding number of projections on the said plate. lhe roller A (shown in Fig. 10) is employed for bending one end of a bar E downward over one end of a bed-plate F, it being understood that the roller A moves bodily downward, as previously described, and rotates by contact with the end of the bar E.

From the foregoing it will be seen that I do not limit myself to any particular shape or arrangement of the roller, as the same may be varied according to the shape to be given to the projection; but by the arrangement described I am enabled to shape very heavy metal bars according to a predetermined design and without danger of fracturing the plate or causing undue abrasion, drawing, or elongation of the plate, and hence the integral projections are very serviceable and durable and not likely to break OK when the plate is subjected to strain.

Having thus described my invention, I

claim as new and desire tosecure by Letters Patent 1. A roller-die for forming angular projectionsintegrally on metal plates and the like, comprisinga roller mounted to turn and having a peripheral bending-face and a peripheral cutting edge, and means for moving the roller bodily in engagement with the plate, and in the direction in which the projection is to extend, whereby the roller is caused to turn in a direction toward the plate to cut the plate, the roller at the same time bending the cut portion, as set forth.

2. A roller-die for forming angular projections integrally on metal plates and the like, comprising a roller mounted to turn and havin g a peripheral bending-face, peripheral cutting edges at the ends of the roller, and means for moving the roller bodily in engagement with the plate and in the direction in which the projection is to extend, whereby the roller is caused to turn in a direction toward the plate, as set forth.

3. A roller-die for forming angular projections integrally on metal plates and the like, comprising a roller mounted to rotate, and having a peripheral bending-face and a pcripheral cutting edge, means for moving the roller bodily in engagement with the metal plate, and in the direction in which the projection is to extend, whereby the said roller is caused to turn in a direction toward the plate and a bed-plate oranvil for supporting the plate, and having an abutment for the projection to be pressed against by the roller, as set forth.

4. A roller-die for forming angular projectipns integrally on metal plates and thelike, comprising a support for the plate, a roller having a peripheral bending-face and a peripheral cutting edge, a support in which the roller is mounted to turn, and adapted to be moved vertically downward to carry the roller bodily in contact with the upper side of the plate near one edge thereof, the point of contact of said roller with the plate being at one side of its axis, whereby the roller when forced in contact'with the plate is caused to rotate in a direction toward the plate and the cutting force of the roller is applied in direction of the top surface of the plate, thereby insuring a clean cut at the inside corner in the plate, the roller at the same time bending the cut portion downward, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HENRY HERDEN.

Witnesses:

C. W. WEBB, S. F. OHAUVELL. 

